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Space Wasn't Always Black

July 10, 2015

Written byCuriosity Staff

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Outer space is a deep, dark place, right? Well, yes and no. Imagine a carrot-colored sky. There was a time when the light emitted by the universe was orange. But as space expanded, the wavelengths stretched and the light emitted changed. Over a few million years, the orange spectrum of light that the universe once emitted changed from red to infrared, which is not perceivable by the human eye and to us just looks dark.